塔里木盆地海相石油的真实勘探潜力

被引：38

作者：

朱光有 ^{[1
]}

杨海军 ^{[2
]}

苏劲 ^{[1
]}

何坤 ^{[1
]}

韩剑发 ^{[2
]}

顾礼敬 ^{[1
]}

朱永峰 ^{[2
]}

张保涛 ^{[1
]}

机构：

[1] 中国石油勘探开发研究院

[2] 中国石油塔里木油田勘探开发研究院

来源：

岩石学报 | 2012年 / 28卷 / 04期

关键词：

海相; 黑油; 裂解成气; 勘探潜力; 奥陶系; 塔里木盆地;

D O I：

暂无

中图分类号：

P618.13 [石油、天然气];

学科分类号：

摘要：

塔里木盆地古生界蕴藏了丰富的海相油气资源,储集层目前埋深在5500～10000m。深部流体的相态或者说液相石油大量消失的深度下限是学术界比较关心的理论问题,而塔里木盆地海相到底富油还是富气也是关系到塔里木油田未来产能规划的现实问题。通过对塔里木盆地原油的热稳定性分析,特别是低地温梯度和晚期快速深埋过程的补偿效应研究,认为液态石油大量消亡(油裂解成气)的深度下限在9000～10000m以下,对应的储层温度大于210℃,在此深度之上液态石油可以大量存在。通过对油气聚集与保存的关键地质科学问题的研究,认为晚海西期是台盆区油藏的主要成藏期,烃源灶区生成的油气主要分布在稳定的古隆起及其围斜区域;而晚海西期这些古隆起及其围斜区碳酸盐岩储层埋藏深度在800～2500m范围内,岩溶储集体发育,这是台盆区形成大面积层状油气聚集的基础,也决定了现今埋深在7000～9000m深度范围内的斜坡区将成为黑油和凝析油的重要勘探接替区。

引用

页码：1333 / 1347

页数：15

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